KBK update for Saturday, 31st August

Curiously, it seems that there were at least three designs of Clare-Pendar S820 switch. Characteristically dreadful photos of the third type to be discovered are now posted. After revisiting the S820 and S880 catalogue page provided by Terry Trumbull of Electro-Mech, it seems that this third design is that which is depicted in the photograph in the catalogue. As the catalogue page was scanned in 1 bit per pixel, all detail is lost from the photograph, but it does appear to have the diagonally-placed retention clips of this third design.

Although S820 is nominally 2.5 oz, the example in question is significantly lower in force than a Micro Switch SD Series 2.5 oz switch. As expected for a reed switch, it is smooth, and noticeably smoother than SD Series.

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